JP2000064069A - Scale removing agent - Google Patents
Scale removing agentInfo
- Publication number
- JP2000064069A JP2000064069A JP10228917A JP22891798A JP2000064069A JP 2000064069 A JP2000064069 A JP 2000064069A JP 10228917 A JP10228917 A JP 10228917A JP 22891798 A JP22891798 A JP 22891798A JP 2000064069 A JP2000064069 A JP 2000064069A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- organic carboxylic
- scale
- carboxylic acid
- sulfamic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、種々の機器、特に
透析機器の配管中に蓄積するスケールを除去するための
製剤に関する。FIELD OF THE INVENTION The present invention relates to formulations for removing scale that accumulates in the plumbing of various devices, especially dialysis machines.
【０００２】[0002]
【従来の技術】透析機器や歯科医療用機器などの機器の
長期間の使用により、その配管中にスケール(主として
炭酸カルシウム)が蓄積することが知られている。従
来、このようなスケールを除去するために、無機酸水溶
液や酢酸水溶液、あるいは、過酢酸や過酸化水素などの
過酸化物を配合した酸性水溶液が用いられている。2. Description of the Related Art It is known that scales (mainly calcium carbonate) are accumulated in the pipes due to long-term use of equipment such as dialysis equipment and dental equipment. Conventionally, in order to remove such scales, an aqueous solution of an inorganic acid, an aqueous solution of acetic acid, or an acidic aqueous solution containing a peroxide such as peracetic acid or hydrogen peroxide is used.
【０００３】しかし、これら従来のスケール除去剤(酸
洗浄剤)は、機器(特に金属部分)を腐食する、強烈な刺
激臭がある、人体に悪影響を及ぼす(発ガン性物質を含
む等)、環境に悪影響を及ぼす(排水のＢＯＤ負荷が大き
い等)、コストが高いなどの問題点を有していた。ま
た、水溶液の形態で供されるスケール除去剤は大きな保
管スペースを必要とし、一方、粉末の形態で供されるス
ケール除去剤には吸湿性の問題があった。However, these conventional scale removers (acid cleaners) corrode equipment (particularly metal parts), have a strong irritating odor, and adversely affect the human body (including carcinogenic substances), There were problems such as adversely affecting the environment (such as large BOD load of wastewater) and high cost. Further, the scale remover provided in the form of an aqueous solution requires a large storage space, while the scale remover provided in the form of a powder has a problem of hygroscopicity.
【０００４】[0004]
【発明が解決しようとする課題】そこで本発明者らは、
上記問題のないスケール除去剤を開発しようとした。即
ち、スケール除去効果が高く、機器を腐食せず、無臭で
あり、人体および環境に問題がなく、安価であり、か
つ、非吸湿性の粉末形態で供することができるスケール
除去剤を開発しようとした。Therefore, the present inventors have found that
An attempt was made to develop a scale remover that does not have the above problems. That is, an attempt is made to develop a scale removing agent that has a high scale removing effect, does not corrode equipment, is odorless, has no problems with the human body and the environment, is inexpensive, and can be provided in a non-hygroscopic powder form. did.
【０００５】[0005]
【課題を解決するための手段】本発明者らは、上記課題
を解決するために種々検討した結果、スルファミン酸お
よび有機カルボン酸を配合することにより、上記欠点の
ない優れた粉末形態のスケール除去剤が得られることを
見いだした。このスケール除去剤は、水に容易に溶解
し、安定であるので、水溶液の形態で供することもでき
る。即ち、本発明は、スルファミン酸および有機カルボ
ン酸を必須成分として含有することを特徴とするスケー
ル除去剤を提供するものである。Means for Solving the Problems As a result of various investigations for solving the above problems, the present inventors have found that by adding sulfamic acid and an organic carboxylic acid, excellent scale removal in powder form without the above-mentioned drawbacks can be achieved. It was found that the drug was obtained. Since this scale removing agent is easily dissolved in water and stable, it can be provided in the form of an aqueous solution. That is, the present invention provides a scale remover containing sulfamic acid and an organic carboxylic acid as essential components.
【０００６】[0006]
【発明の実施の形態】本発明において用いるスルファミ
ン酸とは、以下の一般式：BEST MODE FOR CARRYING OUT THE INVENTION The sulfamic acid used in the present invention has the following general formula:
【化１】Ｒ2ＮＳＯ3Ｈ
[式中、Ｒは独立して水素またはＣ1〜Ｃ4アルキルであ
る]で示される化合物である。Embedded image A compound represented by R 2 NSO 3 H, wherein R is independently hydrogen or C 1 -C 4 alkyl.
【０００７】２個のＲ基の両方がＣ1〜Ｃ4アルキル基で
あるスルファミン酸の例は、Ｎ-ジメチルスルファミン
酸、Ｎ-ジエチルスルファミン酸、Ｎ-ジプロピルスルフ
ァミン酸、Ｎ-ジブチルスルファミン酸、Ｎ-メチル-Ｎ-
エチルスルファミン酸、Ｎ-メチル-Ｎ-プロピルスルフ
ァミン酸などである。２個のＲ基の一方が水素であり、
他方がＣ1〜Ｃ4アルキル基であるスルファミン酸の例
は、Ｎ-メチルスルファミン酸、Ｎ-エチルスルファミン
酸、Ｎ-プロピルスルファミン酸、Ｎ-イソプロピルスル
ファミン酸、Ｎ-ブチルスルファミン酸などである。２
個のＲ基の両方が水素であるスルファミン酸は、アミド
スルホン酸またはアミド硫酸と呼ばれる。Examples of sulfamic acid in which both two R groups are C 1 -C 4 alkyl groups are N-dimethylsulfamic acid, N-diethylsulfamic acid, N-dipropylsulfamic acid, N-dibutylsulfamic acid. , N-methyl-N-
Examples include ethylsulfamic acid and N-methyl-N-propylsulfamic acid. One of the two R groups is hydrogen,
Examples of sulfamic acid in which the other is a C 1 -C 4 alkyl group are N-methylsulfamic acid, N-ethylsulfamic acid, N-propylsulfamic acid, N-isopropylsulfamic acid, N-butylsulfamic acid and the like. Two
Sulfamic acid in which both R groups are hydrogen is called amidosulfonic acid or amidosulfuric acid.
【０００８】本発明においては、２個のＲ基の一方また
は両方が水素であるスルファミン酸を用いるのが好まし
い。両方が水素であるスルファミン酸、即ちアミドスル
ホン酸を用いるのがさらに好ましい。In the present invention, it is preferable to use sulfamic acid in which one or both of two R groups is hydrogen. It is further preferred to use sulfamic acid, ie amidosulfonic acid, both of which are hydrogen.
【０００９】本発明において用いる有機カルボン酸と
は、分子中に１個以上、好ましくは１〜３個のカルボキ
シル基を含む脂肪族および芳香族カルボン酸である。飽
和の脂肪族カルボン酸、例えば、乳酸、グリコール酸、
シュウ酸、マロン酸、コハク酸、リンゴ酸、酒石酸、ク
エン酸などが好ましい。このようなカルボン酸の中で、
スケールの溶解性ならびに安定性、非吸湿性、人体およ
び環境への影響、水への溶解性の点から、グリコール酸
および／またはリンゴ酸を用いるのがさらに好ましい。The organic carboxylic acid used in the present invention is an aliphatic or aromatic carboxylic acid containing one or more, preferably 1 to 3 carboxyl groups in the molecule. Saturated aliphatic carboxylic acids such as lactic acid, glycolic acid,
Oxalic acid, malonic acid, succinic acid, malic acid, tartaric acid, citric acid and the like are preferable. Among such carboxylic acids,
It is more preferable to use glycolic acid and / or malic acid from the viewpoints of scale solubility and stability, non-hygroscopicity, effects on human body and environment, and solubility in water.
【００１０】カルシウム、マグネシウム、鉄などの金属
スケールを溶解するためには、スケール付着量にも左右
されるが、一般にpＨ３.０以下の強酸性が要求される。
有機カルボン酸単独であっても約３％濃度にするとpＨ
約２.５が得られるが、スケールの溶解と共に急速に中
和され、スケール除去効力を持続することができない。
このため、スルファミン酸を配合してpＨを少なくとも
約２.０まで低下させる必要がある。In order to dissolve metal scales such as calcium, magnesium and iron, a strong acidity of pH 3.0 or less is generally required although it depends on the amount of scale deposition.
Even if the organic carboxylic acid is used alone, the pH becomes about 3%.
Approximately 2.5 is obtained but is rapidly neutralized with the dissolution of the scale and the scale removal efficacy cannot be sustained.
Therefore, it is necessary to incorporate sulfamic acid to reduce the pH to at least about 2.0.
【００１１】スルファミン酸と有機カルボン酸の配合比
(重量比)は、１：９９〜５０：５０であってよく、好ま
しくは５：９５〜３０：７０であり、さらに好ましくは
１０：９０〜２０：８０である。スルファミン酸の量が
上記下限を下回ると、スケール除去効果を維持すること
ができず、上記上限を上回ると、金属材料などに悪影響
を与える恐れが生じる。Mixing ratio of sulfamic acid and organic carboxylic acid
The (weight ratio) may be 1:99 to 50:50, preferably 5:95 to 30:70, and more preferably 10:90 to 20:80. If the amount of sulfamic acid is less than the above lower limit, the scale removing effect cannot be maintained, and if it exceeds the above upper limit, there is a risk of adversely affecting metal materials and the like.
【００１２】本発明のスケール除去剤は、上記の必須成
分以外に、所望により酸性の金属イオン封鎖剤、キレー
ト化剤、pＨ緩衝剤、洗浄助剤などを含んでいてもよ
い。このような所望による成分の例として、ピロリン酸
二水素ナトリウムなどのリン系化合物を挙げることがで
きる。これら所望による成分は、スルファミン酸と有機
カルボン酸の合計１００重量部に対して１〜２０重量
部、好ましくは３〜１５重量部の割合で含んでいてよ
い。The scale removing agent of the present invention may optionally contain an acidic sequestering agent, a chelating agent, a pH buffering agent, a washing aid, etc., in addition to the above-mentioned essential components. Examples of such optional components include phosphorus compounds such as sodium dihydrogen pyrophosphate. These optional components may be contained in a ratio of 1 to 20 parts by weight, preferably 3 to 15 parts by weight, based on 100 parts by weight of the total of sulfamic acid and organic carboxylic acid.
【００１３】本発明のスケール除去剤は、上記の必須成
分と所望による成分を通常の撹拌機で均一に混合するこ
とによって粉末形態で製造することができる。また、本
発明のスケール除去剤は、水に溶解して濃縮液として供
することもできる。The scale removing agent of the present invention can be produced in powder form by uniformly mixing the above-mentioned essential components and optional components with a conventional stirrer. Further, the scale removing agent of the present invention can be dissolved in water and provided as a concentrated liquid.
【００１４】粉末形態または濃縮液の形態にある本発明
のスケール除去剤を、有効成分濃度が０.０１〜１重量
／容量％、好ましくは０.０５〜０.５重量／容量％、さ
らに好ましくは約０.２重量／容量％になるように水で
希釈し、従来の酸洗浄法と同様にして機器を洗浄する。The scale removing agent of the present invention in the form of powder or concentrated solution has an active ingredient concentration of 0.01 to 1% by weight / volume, preferably 0.05 to 0.5% by weight / volume, more preferably Is diluted with water to about 0.2% by weight / volume, and the equipment is washed in the same manner as the conventional acid washing method.
【００１５】本発明のスケール除去剤を用いて、特に透
析機器や歯科医療用機器などの機器の配管中に蓄積した
スケールを除去することができる。また、これらの機器
以外に、空調機器、温泉給湯管、船舶用造水器、酪農用
装置、醸造用装置などの配管ならびに種々の排水管(水
洗トイレ排水管など)に蓄積したスケールを除去するこ
とができる。The scale removing agent of the present invention can be used to remove scale accumulated in the piping of equipment such as dialysis equipment and dental equipment. In addition to these devices, removes scale accumulated in air conditioners, hot spring hot water supply pipes, water fresheners for ships, dairy farm equipment, brewing equipment, and various drain pipes (flush toilet drain pipes, etc.). be able to.
【００１６】[0016]
【実施例】以下に実施例を挙げて本発明をさらに詳しく
説明するが、本発明はこれら実施例に限定されるもので
はない。The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples.
【００１７】実施例１
アミドスルホン酸１０ｇとリンゴ酸９０ｇを撹拌機で均
一に混合した。この混合物１０ｇを水１Ｌに溶解して１
％洗浄液を得た。この１％洗浄液１００mlをビーカーに
取り、これに炭酸カルシウム０.１ｇを投入し、炭酸カ
ルシウムの溶解を肉眼で観察した。対照として、１％酢
酸水溶液１００mlに炭酸カルシウム０.１ｇを投入し、
同様に観察した。この結果、本発明のスケール除去剤か
ら調製した１％洗浄液に投入した炭酸カルシウムは、６
分で完全に溶解し、沈殿や白濁を起こさず、従ってフィ
ルター等の目詰まりを起こさないことがわかった。一
方、対照の１％酢酸水溶液に投入した炭酸カルシウムは
１５分でも完全に溶解しなかった。 Example 1 10 g of amidosulfonic acid and 90 g of malic acid were uniformly mixed with a stirrer. 10 g of this mixture was dissolved in 1 L of water to prepare 1
% Cleaning solution was obtained. 100 ml of this 1% washing solution was placed in a beaker, 0.1 g of calcium carbonate was added thereto, and the dissolution of calcium carbonate was visually observed. As a control, 0.1 g of calcium carbonate was added to 100 ml of a 1% acetic acid aqueous solution,
The same observation was made. As a result, the amount of calcium carbonate added to the 1% cleaning liquid prepared from the scale remover of the present invention was 6%.
It was found that the substance was completely dissolved in minutes, and neither precipitation nor cloudiness occurred, and therefore, clogging of filters and the like did not occur. On the other hand, the calcium carbonate added to the control 1% acetic acid aqueous solution was not completely dissolved even in 15 minutes.
【００１８】実施例２
アミドスルホン酸１０ｇ、リンゴ酸９０ｇ、およびピロ
リン酸二水素ナトリウム１０ｇを撹拌機で均一に混合し
た。この混合物１０ｇを水１Ｌに溶解して１％洗浄液を
得た。この１％洗浄液１００mlをビーカーに取り、これ
に炭酸カルシウム０.１ｇを投入し、炭酸カルシウムの
溶解を肉眼で観察した。この結果、本発明のスケール除
去剤から調製した１％洗浄液に投入した炭酸カルシウム
は、７分で完全に溶解し、沈殿や白濁を起こさず、従っ
てフィルター等の目詰まりを起こさないことがわかっ
た。 Example 2 10 g of amidosulfonic acid, 90 g of malic acid, and 10 g of sodium dihydrogen pyrophosphate were uniformly mixed with a stirrer. 10 g of this mixture was dissolved in 1 L of water to obtain a 1% washing liquid. 100 ml of this 1% washing solution was placed in a beaker, 0.1 g of calcium carbonate was added thereto, and the dissolution of calcium carbonate was visually observed. As a result, it was found that the calcium carbonate added to the 1% cleaning solution prepared from the scale remover of the present invention was completely dissolved in 7 minutes, did not cause precipitation or cloudiness, and therefore did not cause clogging of filters and the like. .
【００１９】実施例３
アミドスルホン酸１０ｇ、グリコール酸４５ｇおよびリ
ンゴ酸４５ｇを撹拌機で均一に混合した。この混合物２
ｇを水１Ｌに溶解して０.２％洗浄液を得た(洗浄液
Ａ)。同様に、酢酸および市販のスケール除去剤(過酸化
モノ硫酸カリウム、クエン酸およびリンゴ酸からなる)
を水で希釈してそれぞれ０.２％の洗浄液を得た(それぞ
れ、洗浄液ＢおよびＣ)。これら洗浄液Ａ〜Ｃをそれぞ
れ１００mlずつビーカーに取り、これに炭酸カルシウム
を０.１０、０.０８、０.０６および０.０４ｇずつ投入
し、６０分間静置した後の炭酸カルシウムの溶解および
洗浄液のpＨを調べた。これらの結果を以下の表１に示
す。 Example 3 10 g of amidosulfonic acid, 45 g of glycolic acid and 45 g of malic acid were uniformly mixed with a stirrer. This mixture 2
g was dissolved in 1 L of water to obtain a 0.2% washing liquid (washing liquid A). Similarly, acetic acid and a commercial scale remover (consisting of potassium monosulfate peroxide, citric acid and malic acid)
Were diluted with water to obtain 0.2% washing liquid (washing liquids B and C, respectively). 100 ml of each of these cleaning liquids A to C was placed in a beaker, and calcium carbonate was added to the beaker by 0.10, 0.08, 0.06 and 0.04 g, respectively, and dissolved and washed after standing for 60 minutes Was examined for pH. The results are shown in Table 1 below.
【表１】
表１から明らかなように、本発明の洗浄剤は従来の洗浄
剤よりも炭酸カルシウム溶解力が高く、沈殿や白濁を残
さず、フィルター等の目詰まりを起こすことがない。[Table 1] As is clear from Table 1, the detergent of the present invention has a higher calcium carbonate dissolving power than conventional detergents, does not leave precipitates or cloudiness, and does not cause clogging of filters and the like.
【００２０】[0020]
【発明の効果】本発明のスケール除去剤は、透析機器な
どに付着したスケール(主として炭酸カルシウム)の溶解
力が高く、スケールを水溶性にするので、フィルターな
どを含め装置の機能に悪影響を与えることがない。ま
た、従来の酸洗浄剤に比べて金属腐食が少なく、かつ、
高分子材料(ゴム、プラスチックなど)に悪影響を与える
ことが少ない。さらに本発明のスケール除去剤は、無臭
であり、法的に規制される有害物質を含有しておらず、
従って人体および環境に対する安全性が非常に高い。ま
た本発明のスケール除去剤は、従来の酸洗浄剤よりも安
価に供給することができる。さらに本発明のスケール除
去剤は、粉末または濃縮液の形態で供することができる
ので、保管場所をとらず、運搬も容易である。また、こ
の粉末は水に容易に溶解し、その濃縮液およびその希釈
液は安定であり、経時変化が少ない。EFFECTS OF THE INVENTION The scale remover of the present invention has a high dissolving power for scale (mainly calcium carbonate) attached to dialysis equipment and makes the scale water-soluble, which adversely affects the function of the apparatus including filters. Never. Also, less metal corrosion than conventional acid cleaners, and
Has little adverse effect on polymer materials (rubber, plastic, etc.). Furthermore, the scale remover of the present invention is odorless and does not contain any legally regulated harmful substances,
Therefore, the safety to the human body and the environment is very high. Further, the scale remover of the present invention can be supplied at a lower cost than conventional acid cleaners. Furthermore, since the scale removing agent of the present invention can be provided in the form of powder or concentrated solution, it does not take up a storage space and is easy to transport. Further, this powder is easily dissolved in water, and its concentrated solution and its diluted solution are stable and show little change with time.
Claims (5)
必須成分として含有することを特徴とするスケール除去
剤。1. A scale remover comprising sulfamic acid and an organic carboxylic acid as essential components.
比(重量比)が５：９５〜３０：７０である請求項１に記
載のスケール除去剤。2. The scale remover according to claim 1, wherein the blending ratio (weight ratio) of sulfamic acid and organic carboxylic acid is 5:95 to 30:70.
比(重量比)が１０：９０〜２０：８０である請求項２に
記載のスケール除去剤。3. The scale remover according to claim 2, wherein the blending ratio (weight ratio) of sulfamic acid and organic carboxylic acid is 10:90 to 20:80.
る請求項１〜３のいずれかに記載のスケール除去剤。4. The scale removing agent according to claim 1, wherein the sulfamic acid is amidosulfonic acid.
またはリンゴ酸である請求項１〜４のいずれかに記載の
スケール除去剤。5. The organic carboxylic acid is glycolic acid and / or
Alternatively, the scale removing agent according to claim 1, which is malic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10228917A JP2000064069A (en) | 1998-08-13 | 1998-08-13 | Scale removing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10228917A JP2000064069A (en) | 1998-08-13 | 1998-08-13 | Scale removing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000064069A true JP2000064069A (en) | 2000-02-29 |
Family
ID=16883888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10228917A Pending JP2000064069A (en) | 1998-08-13 | 1998-08-13 | Scale removing agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000064069A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000063890A (en) * | 1998-08-25 | 2000-02-29 | Takeshi Sugimoto | Detergent for artificial, tooth and drain pipe such as dental saliva-discharging ball etc. |
| WO2002066385A1 (en) * | 2001-02-21 | 2002-08-29 | Seiwa Pro Co., Ltd. | Remover for scale deposited on titanium material |
| WO2003040282A1 (en) * | 2001-11-09 | 2003-05-15 | Jiro Sakurai | Detergent for metallic product |
| US6670312B2 (en) | 2000-12-08 | 2003-12-30 | Takeshi Sugimoto | Composition for removal of calcium or magnesium compounds from an article |
| JP2007270222A (en) * | 2006-03-30 | 2007-10-18 | Kurita Water Ind Ltd | Scale detergent and scale removing method |
| JP2007325671A (en) * | 2006-06-06 | 2007-12-20 | Shin Etsu Polymer Co Ltd | Piping tube for medicinal solution |
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